Their underground metamorphosis is slow and depends on minerals in the silt seeping into the skeletal structure, where they gradually solidify.

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Over longer spans, however, few women have the endurance, the skeletal structure, the muscularity, to withstand the physical brutality of combat.

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The argument goes, if you have bad knees from running, or a sore hip, look at those padded heels and the air bubbles that have you wrecking your skeletal structure.

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